I agree, on closer inspection there does appear to be a flat ridge along the sides of the crystal which is not present on the Duncan, more detailed pics of Duncan show this. Mark's watch looks more square as well. Ooops, my bad.

Sweet watch Fifth, The new pics are great and will help immensely when looking at ads here and elswhere. I'm still liking the "Darwin" theory, distinctive watch named after a very famous man. Makes perfect sense.